assing specific colors according to pixels values of a grid2image map

Hi to all!

I use grid2image function to create a map of my rasterized data. How can i assign specific values to pixels when they have cartain values? For example I want to have NaN pixels uncolored, pixels with value "1" colored blue, pixels with value "2" colored red etc.

Thank for your help.

Sakis

Answer 1

[Image Analyst]

I never heard of that function. You'll have to ask the author. The built-in MATLAB function that does that (I think) is TriScatteredInterp().

To do the pseudocoloring you asked for, just set up a colormap and use it:

myColorMap = zeros(256, 3);
myColorMap(2, :) = [0, 0, 1]; % Gray level 1 (which is at row 2) is blue
myColorMap(3, :) = [1, 0, 0]; % Gray level 2 is red

and so on.